51419480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{449}}^1$

素因数の和:876

約数の個数: 64

約数和(自身を含む): 132840000

約数和(自身を除く): 81420520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 409, 449, 818, 898, 1636, 1796, 2045, 2245, 2863, 3143, 3272, 3592, 4090, 4490, 5726, 6286, 8180, 8980, 11452, 12572, 14315, 15715, 16360, 17960, 22904, 25144, 28630, 31430, 57260, 62860, 114520, 125720, 183641, 367282, 734564, 918205, 1285487, 1469128, 1836410, 2570974, 3672820, 5141948, 6427435, 7345640, 10283896, 12854870, 25709740, 51419480]

約数ペア:

[(1, 51419480), (2, 25709740), (4, 12854870), (5, 10283896), (7, 7345640), (8, 6427435), (10, 5141948), (14, 3672820), (20, 2570974), (28, 1836410), (35, 1469128), (40, 1285487), (56, 918205), (70, 734564), (140, 367282), (280, 183641), (409, 125720), (449, 114520), (818, 62860), (898, 57260), (1636, 31430), (1796, 28630), (2045, 25144), (2245, 22904), (2863, 17960), (3143, 16360), (3272, 15715), (3592, 14315), (4090, 12572), (4490, 11452), (5726, 8980), (6286, 8180)]